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[PATCH] ext4: move block number hi bits

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move '_hi' bits of block numbers in the larger part of the
block group descriptor structure

Signed-off-by: Alexandre Ratchov <alexandre.ratchov@bull.net>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alexandre Ratchov
2006-10-11 01:21:15 -07:00
committed by Linus Torvalds
parent 0d1ee42f27
commit 8fadc14323
6 changed files with 64 additions and 46 deletions
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46
fs/ext4/super.c
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@@ -63,40 +63,52 @@ static void ext4_write_super (struct super_block * sb);
static void ext4_write_super_lockfs(struct super_block *sb);
ext4_fsblk_t ext4_block_bitmap(struct ext4_group_desc *bg)
ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
struct ext4_group_desc *bg)
{
return le32_to_cpu(bg->bg_block_bitmap) |
((ext4_fsblk_t)le16_to_cpu(bg->bg_block_bitmap_hi) << 32);
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
(ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
}
ext4_fsblk_t ext4_inode_bitmap(struct ext4_group_desc *bg)
ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
struct ext4_group_desc *bg)
{
return le32_to_cpu(bg->bg_inode_bitmap) |
((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_bitmap_hi) << 32);
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
(ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
}
ext4_fsblk_t ext4_inode_table(struct ext4_group_desc *bg)
ext4_fsblk_t ext4_inode_table(struct super_block *sb,
struct ext4_group_desc *bg)
{
return le32_to_cpu(bg->bg_inode_table) |
((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_table_hi) << 32);
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
(ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
}
void ext4_block_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
void ext4_block_bitmap_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk)
{
bg->bg_block_bitmap = cpu_to_le32((u32)blk);
bg->bg_block_bitmap_hi = cpu_to_le16(blk >> 32);
if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
bg->bg_block_bitmap_hi = cpu_to_le32(blk >> 32);
}
void ext4_inode_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
void ext4_inode_bitmap_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk)
{
bg->bg_inode_bitmap = cpu_to_le32((u32)blk);
bg->bg_inode_bitmap_hi = cpu_to_le16(blk >> 32);
if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
bg->bg_inode_bitmap_hi = cpu_to_le32(blk >> 32);
}
void ext4_inode_table_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
void ext4_inode_table_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk)
{
bg->bg_inode_table = cpu_to_le32((u32)blk);
bg->bg_inode_table_hi = cpu_to_le16(blk >> 32);
if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
bg->bg_inode_table_hi = cpu_to_le32(blk >> 32);
}
/*
@@ -1239,7 +1251,7 @@ static int ext4_check_descriptors (struct super_block * sb)
if ((i % EXT4_DESC_PER_BLOCK(sb)) == 0)
gdp = (struct ext4_group_desc *)
sbi->s_group_desc[desc_block++]->b_data;
block_bitmap = ext4_block_bitmap(gdp);
block_bitmap = ext4_block_bitmap(sb, gdp);
if (block_bitmap < first_block || block_bitmap > last_block)
{
ext4_error (sb, "ext4_check_descriptors",
@@ -1248,7 +1260,7 @@ static int ext4_check_descriptors (struct super_block * sb)
i, block_bitmap);
return 0;
}
inode_bitmap = ext4_inode_bitmap(gdp);
inode_bitmap = ext4_inode_bitmap(sb, gdp);
if (inode_bitmap < first_block || inode_bitmap > last_block)
{
ext4_error (sb, "ext4_check_descriptors",
@@ -1257,7 +1269,7 @@ static int ext4_check_descriptors (struct super_block * sb)
i, inode_bitmap);
return 0;
}
inode_table = ext4_inode_table(gdp);
inode_table = ext4_inode_table(sb, gdp);
if (inode_table < first_block ||
inode_table + sbi->s_itb_per_group > last_block)
{
@@ -1622,11 +1634,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
}
sbi->s_desc_size = le16_to_cpu(es->s_desc_size);
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE ||
if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
sbi->s_desc_size & (sbi->s_desc_size - 1)) {
printk(KERN_ERR
"EXT4-fs: unsupported descriptor size %ld\n",
"EXT4-fs: unsupported descriptor size %lu\n",
sbi->s_desc_size);
goto failed_mount;
}